Dusknoir (Flashfire 40/106)
Ability Shadow Void

As often as you like during your turn (before your attack), you may move 1 damage counter from 1 of your Pokémon to this Pokémon.

Psychic Colorless Colorless
Pain Pellets

Put damage on 1 of your opponent's Pokémon equal to the number of damage counters on this Pokémon.